Yes. First of all he is talking about spiritual gifts, not "Protestant Purgatory."
7 But unto every one of us is given grace according to the measure of the
gift of Christ.
Then he talks about the ascension.
8 Wherefore he saith, When he ascended up on high, he led captivity captive, and gave gifts unto men.
After His crucifixion he ascended up into heaven and led the captivity of sin captive to His Perfect Sacrifice, which allowed Him to give Spiritual Gifts to saved people.
9 (Now that he ascended, what is it but that he also descended first into the lower parts of the earth?
And, of course, prior to the ascension, he was in the grave, the "lower parts of the earth."
The Gospel is "He died on the cross, was BURIED (lower parts of the earth) and rose again, and ascended into Heaven.
You don't need a Catholic myth to understand the bible. Just believe what it says. Don't add a bunch of nonsense to it!